EP0882619A2 - Sitzkissenverstellvorrichtung für Kraftfahrzeugsitze - Google Patents

Sitzkissenverstellvorrichtung für Kraftfahrzeugsitze Download PDF

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Publication number
EP0882619A2
EP0882619A2 EP98830027A EP98830027A EP0882619A2 EP 0882619 A2 EP0882619 A2 EP 0882619A2 EP 98830027 A EP98830027 A EP 98830027A EP 98830027 A EP98830027 A EP 98830027A EP 0882619 A2 EP0882619 A2 EP 0882619A2
Authority
EP
European Patent Office
Prior art keywords
seat
arm
cushion
parallelogram linkage
height
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP98830027A
Other languages
English (en)
French (fr)
Other versions
EP0882619A3 (de
Inventor
Majid Arefi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lear Corp Italia SRL
Original Assignee
Lear Corp Italia SRL
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lear Corp Italia SRL filed Critical Lear Corp Italia SRL
Publication of EP0882619A2 publication Critical patent/EP0882619A2/de
Publication of EP0882619A3 publication Critical patent/EP0882619A3/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
    • B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
    • B60N2/1605—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable characterised by the cinematic
    • B60N2/161—Rods
    • B60N2/1615—Parallelogram-like structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
    • B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
    • B60N2/1635—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable characterised by the drive mechanism
    • B60N2/165—Gear wheel driven mechanism
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
    • B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
    • B60N2/1675—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable with weight compensating means

Definitions

  • the present invention relates to devices for adjusting the height of the cushion of a motor-vehicle seat, of the type comprising a base frame and a cushion frame connected to the base frame by a parallelogram linkage, and means for adjusting this parallelogram linkage.
  • Devices of the above indicated type are commonly used in motor-vehicle seats in order to enable to user to adapt the height of the seat to his needs.
  • Devices are also known which are used for adjusting the cushion attitude, i.e. the height of the front portion of the cushion relative to the rear portion thereof, independently from the height adjustment of the entire seat.
  • the devices known which enable the height of the entire seat to be adjusted independently from the cushion attitude are relatively complicated and expensive.
  • the object of the present invention is that of providing a particularly simple and efficient seat, which has the possibility of adjusting both the whole height of the entire cushion and, independently from this, the attitude of the cushion, with means of simple and inexpensive construction.
  • the invention provides a device for adjusting the height of the cushion of a motor-vehicle seat, of the type indicated at the beginning of the present description, characterized in that said parallelogram linkage includes an arm which is adjustable in length.
  • said arm which is adjustable in length is formed by a cylinder of adjustable length of the type comprising a cylindrical body and a stem slidably mounted within the cylindrical body and adapted to be locked at any position within this body by means of a helical spring wound around the stem and carried by the cylindrical body, the spring being normally tightened around the stem so as to lock the stem by friction, unlocking means being provided for expanding the turns of said helical spring so as to enable the stem to slide freely.
  • Cylinders of adjustable length of the above indicate type are well khown per se .
  • One example of these devices is disclosed in European patent EP-B-0 182 440.
  • reference numeral 1 generally designates a motor-vehicle seat comprising a cushion 2 and a backrest 3 connected to cushion 2 by a device 4 for backrest adjustment.
  • the cushion 2 comprises a frame 5 of sheet metal which in the illustrated example includes two side plates 6 connected to each other by a front cross-member 7.
  • the cushion frame 5 is connected by a parallelogram linkage 8, which will be described in detail in the following, to a base frame formed by two longitudinal profiles 9 rigidly connected to each other by cross elements (only partially illustrated) the profiles 9 being slidably mounted, in a way conventional per se , on two cooperating longitudinal guides secured to the motor-vehicle floor panel in order to enable adjustment of the longitudinal position of the seat on the motor-vehicle.
  • the parallelogram linkage 8 which includes, for each side of seat 1, a front articulated arm 10 and a rear articulated arm 11.
  • the arm 10 is articulated around transverse axes at 10a to frame 5 of cushion 2 and at 10b to the respective profile 9 of the base frame 20.
  • the rear arm 11 is articulated to frame 5 of the cushion at 11a and to the respective profile 9 at 11b. Due to the connection formed by the parallelogram linkage 8, when this parallelogram linkage changes its configuration, the seat 1 is moved vertically relative to the base frame 20.
  • the articulated arm 11 forms part of a plate 12 on which a toothed sector 13 is formed engaging a toothed wheel 14 rotatably supported by the base frame 20 and connected through a driving transmission (not shown) to an actuating lever 15 provided with an extendable handgrip 15a, whose profile is shown by dotted lines in figure 1.
  • actuating lever 15 and the above mentioned driving transmission are not shown herein since they are of a known type and they do not fall, taken alone, within the scope of the invention. Furthermore, the deletion of these details from the drawings renders the latter simpler and easier to understand.
  • the user may operate lever 15 in order to modify the configuration of the parallelogram linkage 8 and then the height of the whole seat 1.
  • the seat is pushed upwardly by a gas spring 16 having one end connected to a transverse shaft 17 which rigidly connects the two sides 6 of the cushion frame 5 to each other, the other end being connected to a shaft 18 which connects the two arms 11 arranged on the two sides of the seat to each other in rotation around axis 11b.
  • the gas spring 16 tends to extend and therefore tends to move the seat towards the position of maximum height.
  • the actuating device 15 which drives the parallelogram linkage is of a known type which is adapted to lock the parallelogram linkage 8 at any position at which it has been left, against the action of spring 16, when device 15 is released.
  • the user may cause a rotation of the articulated arms and hence a change in the configuration of the whole parallelogram linkage 8 which causes a change in height of the seat. If the user wishes to raise the seat, he has only to allow the thrust of spring 16 while actuating lever 15. If instead he wishes to lower the seat, the user may exploit his weight in order to push the cushion downwardly, against the action of spring 16, while actuating lever 15.
  • the above described structure and operation of the device for adjusting the height of the seat are of a type known per se.
  • the parallelogram linkage 8 includes an arm 19 of adjustable length. More precisely, on one side of the seat, the arm 10 forms part of a L-shaped element 21, having a further arm 22.
  • the adjustable arm 19 is pivotally connected at 23 to arm 22 and at 24 to plate 12 at a position which is diagrammatically opposite to axis 11a with respect to axis 11b.
  • the arm of adjustable length is formed by a cylinder of the type known for example from European patent EP-B-0 182 440, comprising a cylindrical body 25 within which there is slidably mounted a stem 26.
  • the stem 26 can be locked at any position relative to the cylindrical body 25 by means of a helical spring carried inside the cylindrical body 25. In its undeformed condition, this spring has an inner diameter which is slightly lower that the diameter of stem 26. Therefore, in the rest condition, the helical spring is tightened around stem 26 and thus locks the stem by friction.
  • the user may obtain a change in the attitude of the cushion by actuating the bowden cable 27 and causing a lengthening or a shortening of cylinder 19.
  • the lengthening movement is obtained by decreasing the weight applied over the seat, so as to favour the action of spring 16 tending to raise the seat.
  • the shortening movement is obtained in the opposite way, by increasing the downward force applied on the cushion so as to lower it against the action of spring 16.
  • the front arm 10 is not articulated to the base frame 20 around a fixed axis, but rather it is connected to the base frame 20 by a pin-and-slot coupling.
  • the two front arms 10 are connected to each other by a cross shaft 28 which engages at each end a slot 29 formed in a bracket secured to the respective profile 9.
  • the device according to the invention thus enables the independent adjustment of the height of the entire seat and the attitude of the cushion, i.e. the height of the front part of the cushion with respect to the rear part, by simple and inexpensive means.
  • the basic principle of the invention lies in that at least one arm forming part of the parallelogram linkage is provided which is adjustable in length. Therefore, the arrangement of this arm within the parallelogram linkage could be also different from that shown by way of example in the present description. Furthermore, as indicated already, the arm adjustable in length could be made also in a different way, i.e. not necessarily in form of a cylinder with a stem which can be locked by a helical spring, as disclosed herein.

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Seats For Vehicles (AREA)
  • Axle Suspensions And Sidecars For Cycles (AREA)
EP98830027A 1997-05-28 1998-01-23 Sitzkissenverstellvorrichtung für Kraftfahrzeugsitze Withdrawn EP0882619A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT97TO000460A IT1293912B1 (it) 1997-05-28 1997-05-28 Dispositivo di regolazione del cuscino di un sedile di autoveicolo.
ITTO970460 1997-05-28

Publications (2)

Publication Number Publication Date
EP0882619A2 true EP0882619A2 (de) 1998-12-09
EP0882619A3 EP0882619A3 (de) 1999-08-11

Family

ID=11415744

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98830027A Withdrawn EP0882619A3 (de) 1997-05-28 1998-01-23 Sitzkissenverstellvorrichtung für Kraftfahrzeugsitze

Country Status (2)

Country Link
EP (1) EP0882619A3 (de)
IT (1) IT1293912B1 (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2788736A1 (fr) * 1999-01-27 2000-07-28 Stabilus Gmbh Siege reglable en hauteur, en particulier pour vehicule automobile
DE19946157A1 (de) * 1999-09-27 2001-04-05 Faure Bertrand Sitztech Gmbh Kraftfahrzeugsitz
EP1288061A1 (de) * 2001-09-01 2003-03-05 Keiper GmbH & Co. Fahrzeugsitz, insbesondere Kraftfahrzeugsitz
DE102009052111A1 (de) * 2009-11-05 2011-05-12 Johnson Controls Gmbh Sitzkissenneigungseinstellung
DE102019129161A1 (de) * 2019-10-29 2021-04-29 Grammer Aktiengesellschaft Vorrichtung zur Einstellung einer Sitzposition
DE102019129162A1 (de) * 2019-10-29 2021-04-29 Grammer Aktiengesellschaft Vorrichtung zur Einstellung einer Sitzposition
CN112744130A (zh) * 2019-10-29 2021-05-04 格拉默公司 用于调整座椅位置的装置
DE102021212087A1 (de) 2021-10-26 2023-04-27 Brose Fahrzeugteile SE & Co. Kommanditgesellschaft, Coburg Fahrzeugsitz mit einer asymmetrischen Kinematikeinrichtung

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0182440A2 (de) 1984-11-23 1986-05-28 ELCAT S.p.A. Hülle zum Aufnehmen und Feststellen einer Verstellstange eines Kraftfahrzeugsitzes

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2942647A (en) * 1957-08-26 1960-06-28 Ferro Stamping Co Slideless seat support and adjusting device
US3022035A (en) * 1959-11-02 1962-02-20 Ferro Stamping Co Seat supporting and adjusting mechanism
DE2007140A1 (de) * 1970-02-17 1971-09-02 Stabilus Ind U Handelsgesellsc Abfederung eines Sitzes oder derglei chen
DE2236913C3 (de) * 1972-07-27 1982-02-04 Keiper Automobiltechnik Gmbh & Co Kg, 5630 Remscheid Höhenverstellbarer Sitz, insbesondere für Kraftfahrzeuge
ZA777675B (en) * 1977-02-04 1978-10-25 Turner Willenhall Ltd H R Seat height adjustment mechanism
US4326690A (en) * 1979-05-03 1982-04-27 Ferro Manufacturing Corporation Seat adjusting mechanism
DE3437962A1 (de) * 1984-10-17 1986-04-17 Karosseriewerke Weinsberg Gmbh, 7102 Weinsberg Hoehenverstellbarer drehsitz fuer kraftfahrzeuge
GB2187379B (en) * 1986-03-05 1990-04-04 Ti Cox Ltd Height adjustment mechanism
JPS62292543A (ja) * 1986-06-12 1987-12-19 Ikeda Bussan Co Ltd 座席装置
US4995580A (en) * 1989-07-31 1991-02-26 Tachi-S. Co., Ltd. Height adjusting device for vehicle seat

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0182440A2 (de) 1984-11-23 1986-05-28 ELCAT S.p.A. Hülle zum Aufnehmen und Feststellen einer Verstellstange eines Kraftfahrzeugsitzes

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2788736A1 (fr) * 1999-01-27 2000-07-28 Stabilus Gmbh Siege reglable en hauteur, en particulier pour vehicule automobile
GB2346082A (en) * 1999-01-27 2000-08-02 Stabilus Gmbh Height-adjustable seat for a vehicle
ES2182626A1 (es) * 1999-01-27 2003-03-01 Stabilus Gmbh Asiento ajustable en altura, en particular para un vehiculo.
DE19946157A1 (de) * 1999-09-27 2001-04-05 Faure Bertrand Sitztech Gmbh Kraftfahrzeugsitz
DE19946157B4 (de) * 1999-09-27 2005-05-12 Faurecia Autositze Gmbh & Co. Kg Kraftfahrzeugsitz
EP1288061A1 (de) * 2001-09-01 2003-03-05 Keiper GmbH & Co. Fahrzeugsitz, insbesondere Kraftfahrzeugsitz
US6752455B2 (en) 2001-09-01 2004-06-22 Keiper Gmbh & Co. Kg Vehicle seat, especially a motor vehicle seat
DE102009052111A1 (de) * 2009-11-05 2011-05-12 Johnson Controls Gmbh Sitzkissenneigungseinstellung
DE102009052111B4 (de) * 2009-11-05 2012-05-16 Johnson Controls Gmbh Sitzkissenneigungseinstellung
EP2496440A1 (de) * 2009-11-05 2012-09-12 Johnson Controls GmbH Sitzkissenneigungseinstellung
US9150133B2 (en) 2009-11-05 2015-10-06 Johnson Controls Gmbh Seat cushion inclination adjustment system
EP2496440B1 (de) * 2009-11-05 2018-01-03 Adient Luxembourg Holding S.à r.l. Sitzkissenneigungseinstellung
DE102019129161A1 (de) * 2019-10-29 2021-04-29 Grammer Aktiengesellschaft Vorrichtung zur Einstellung einer Sitzposition
DE102019129162A1 (de) * 2019-10-29 2021-04-29 Grammer Aktiengesellschaft Vorrichtung zur Einstellung einer Sitzposition
CN112744132A (zh) * 2019-10-29 2021-05-04 格拉默公司 用于调节座椅位置的设备
CN112744130A (zh) * 2019-10-29 2021-05-04 格拉默公司 用于调整座椅位置的装置
CN112744131A (zh) * 2019-10-29 2021-05-04 格拉默公司 用于调整座椅位置的装置
EP3815962A1 (de) * 2019-10-29 2021-05-05 Grammer Ag Vorrichtung zur einstellung einer sitzposition
EP3815963A1 (de) * 2019-10-29 2021-05-05 Grammer Ag Vorrichtung zur einstellung einer sitzposition
US11433789B2 (en) 2019-10-29 2022-09-06 Grammer Ag Device for adjusting a seat position
US11654799B2 (en) 2019-10-29 2023-05-23 Grammer Ag Apparatus for adjusting a seat position
US11679697B2 (en) 2019-10-29 2023-06-20 Grammer Ag Device for adjusting a seat position
DE102019129161B4 (de) 2019-10-29 2023-06-22 Grammer Aktiengesellschaft Vorrichtung zur Einstellung einer Sitzposition
DE102019129162B4 (de) 2019-10-29 2023-11-02 Grammer Aktiengesellschaft Vorrichtung zur Einstellung einer Sitzposition und Fahrzeugsitz
DE102021212087A1 (de) 2021-10-26 2023-04-27 Brose Fahrzeugteile SE & Co. Kommanditgesellschaft, Coburg Fahrzeugsitz mit einer asymmetrischen Kinematikeinrichtung

Also Published As

Publication number Publication date
ITTO970460A0 (de) 1997-05-28
IT1293912B1 (it) 1999-03-11
ITTO970460A1 (it) 1998-11-28
EP0882619A3 (de) 1999-08-11

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